'''score = 65
if score >=90:
    print('优')
elif score >=80:
    print('中')
elif score>=60:
    print('差')

if eval(input('请输入你的分数:'))>=90:
    print('成绩优秀')
elif(eval(input('请输入你的分数:')))>=60:
    print('成绩良好')
elif(eval(input('请输入你的分数:')))>=0:
    print('还需努力')'''

score = eval(input('请输入你的分数'))
if score >=90 and score <=100:
    print('优秀')
elif score >=80 and score <90:
    print('良好')
elif score >=60 and score <80:
    print('差劲')
elif score >=0 and score <60:
    print('补课')






























